Portable lamp



W. T. BARNUM';

PORTABLE LAMP.

APPLICATION mu) MAR. 21, 1921.

1,412,036, Patented Apr. 11, 1922.

3 SHEE TSSHEET 1.

W. T. BARNUM.

PORTABLE LAMP.

APPLICATION HLED MAR. 21. x921.

1,412,036, Patented Apr. 11, 1922.

3 $HEETSSHEET 2- W. T.' BARNUM.

PORTABLE LAMP.

APPLICATION man MAR. 21, 1921.

Patented Apr. 11, 1922.

3. SHEETSSHET 3.

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' most desirable usejof the lamp.

WILLIAM Ti BARNUIVI, or cHIcAe-o, rumors.

. PORTABLE LAME v To alleckom it may concern: I

Be 1t known that I, VVILLIAM T. BARNUM, a cltizenof the United States,residing at Chicago, in the county of Cook and State In many cases, it is inconvenientorinexpedient for photographers to use a hash light and it is necessary for lightingthe subjects to be photographed at night or in places where daylight is inaccessible, to use a parabolic reflector containing a high powered electric light. These are sometimes mounted upon a tripod-or other fined support. It is often necessary, however, to use the, reflectorlamp in the hands of the operator, to particularly direct-the light to a given spot or to direct the light rays where desired by moving the lamp to and fro during the exposure of the camera, so as to project the lightinto deep crevices, to soften setshadows and otherwise photographer.- I

The heat generated in these highpowered lamps makes thehandling of the" same a promote the handicraft of matter ofgreat inconvenience unless the reflector is provided with a long and insulated handle; Such handles are; exceedingly awkward, and frequently, by their, mere size and position and shape, prevent'the, best and -The principal object of my invention is to provide a portable lamp comprising 1a parabolic metal reflector, .of exceedingly light. metal, and having a high powered candescent bulb, with an air-cooled handle made ofmetaland so shaped and arranged as to form a ,supportfor the incandescent;

bulb, and at the same time be convenient at allfltimes for the purposesintende'd. Another object ofthe'inventlon 1s to provide this air cooled f handle (with I means.

whereby the lamp,- asa unit, may. be removably' and adjustably mounted upon a fixed support, such as, the familiar. photographers tripod.

v Specification of Letters Patent. Pateflted Application filed March 21, 1921." Seria1 no. 454,040.

inga detailr I I 1 I I In the drawings, .a high powered incandes-r cent bulb is indicated by the letter A,'its

Another objectof the invention isto provide a pivoted arm to be used in connection with the air cooledhandle, adapted to'be swung one ther side of said handle, so that 7 together withthe handle and the rim of the reflector, there will be three points of contact for the lamp-when resting upon a fixed n ii, 1,922;

surface, such as a table or floor, it beingffrequently necessary to set the-portable lamp remain in a certain positiontocast a steady light upon the subject being photographed.

down upon a table or the floor andhave it With the foregoing objects in view, my

invention consistsin thejdevi'ces and combinations of devices illustrated, describedand I I herein claimed. I

In the-drawings:

Fig. 1 represents a lamp constructed in accordance with myinvention, thesame being a I rear elevation upon'a fiatsurface. I c

F '2 representsthe lamp in side elevation, attached'to tripod.

socket of the handle; I

a fixed support,'such as a with the lamp resting Fig. 3 is acentral vertical sectional view, showing the bulb vsupported in the lamp Fig. i is a top plan view, enlarged, of the a attachment for the handle; and means for adjusting the same.

.Fig. 5 is a side'elevation ofthe same on the same scale. I

Fig. 6 1s a horizontal sectional view showshank 1 being adapted for connection with 'a' lamp socket'2. The lamp socket 2 is of any conventional shape or construction, andcarries theelectric cable 3 adapted to be connected with a "source of electrical energy. As neither the bulb nor the s0cket,jper se,f constitute any p art of I the invention except.

as in combination with the other parts of Ithe device', .it is unnecessary to further'describe the same.

The. lamp socket 2 4, attached by suitable rivets 5 to a metallic refleotor 6, parabolic in shape and terminating with a finished beaded margin 7. The

reflector 6 is preferably made of aluminum, as is also thehandle 4. Itwill be observed particularly byreference. to Fig. 3, that theliandle a is tapered, its smaller end be-.

ing that towhich'the socket 2 is secured,

is located in and se cured to the lower end of the metal handle and its larger end being that riveted to the reflector 6. At a point above 'where the lamp socket is attached, and spaced upwardly at proper intervals throughout the length of the handle, I have made a plurality of rows of large and small apertures 8 and 9. It will also be noticed by reference to Fig. 3, that the shank 1 of the bulb or lamp A is substantially cylindrical throughout its length and thereby affords a very considerable air space, indicated by the letter S, between said shank 1 and handle 4-. I have found that by providing this air space S in the handle, and by providing a plurality of air holes or apertures in the handle, that it does not become heated, but merely warm, and that the device as a whole may be very comfortably and conveniently handled, without a glove or other protective covering, notwithstanding the fact that the metallic reflector 6 will be almost too hot to touch.

On the outside of the handle at, Iplace a' ring 10, the/same consisting of a band of metal provided at each end with a lug 11 and a screw 12. By this means, the band 10 may be firmly, although removably, secured to the upper part of the handle 1. Projecting upwardly from the band 10 is a short standard 13. A metal bar of flat metal 14:, approximately as long as the handle 4:, is pivotally mounted at 15 to the standard 13. This bar 14c may be swung to the right or left of the standard 13 as indicated in dotted lines in Fig. 5. The lower end of the handle 4, a portion of the beaded margin 7 of the reflector 6 and the lower end or" this bar 14 form three points of support, when it is necessary to place the lamp as a whole. upon a support such as a table or the floor. This is indicated clearly in Fig. 1, where in full lines the arm l is shown as thrown to the right, and where in dotted lines the arm is indicated as thrown to the left of the arm.

hen it. is desired to mount the lamp upon a fixed support, such as a tripod, I make use of an adjustable attachment secured to the band '10. This attachment is as follows: A metallic frame-like structure 16 is loosely mount-ed upon a stud 17) The stud is riveted to a ring 10 so as toproject laterally therefrom, as shown more clearly in Fig. 6.. Surrounding the stud 17 and between the frame 16 and the ring 10, is a disc member 18, made rigid with the ring 10 by soldering or other convenient means. Passing through the two side walls of the frame 16is an adjusting screw member or bolt 19, adapted to engage a clamping nut 20. The nut 20 isot suflicient size to overlie the peripheral margin of the disc 18 so that 'when the thumb piece 21 of the bolt 19 is turned, the nut'20 will clamp the disc 18 closely against the side wall of the frame 16 and thus hold the frame structure with respect to the ring 10 in that position in which it happens to be when the clamping action occurs. Projecting downwardly from the frame 16 is a pivotal stud or bolt 22 adapted to enter suitable recess in the upper end of a tripod section 23. A thumb screw 24 in said tripod section 23 is adapted, in a fa miliar manner, to have its end bear against the stud 22, and thus lock the stud 22 and the tripod 23 together.

When the device as a whole is placed upon a tripod, the lamp may be swung in a horizontal plane into the desired position, and then looked in said position, the stud 22 turning on its axis in the tripod section 23 until the desired position is attained, when it is locked in that position by the thumb screw 24. Similarly, any angular position, with respect to the tripod, may be given to the lamp as a whole, by loosening the thumb screw 19 and moving the lamp; in such case the lamp with the stud 17 pivots in the frame 16 until the desired angular position is attained, when the parts are locked together by turning the screw 19.

it will thus be seen that adjustment may be made vertically and horizontally, as de sired. Changes in the details of construction may be made without departing from the spirit of my invention, but the forms here shown are recommended as simple,

cheap and highly efficient.

I claim as my invention:

1. A portable lamp comprising a reflector of thin, light metal and an elon gated handle also of thin, light metal projecting radially therefrom, a lamp socket in the handle, a lamp provided with a shank, the latter extending into the handle and secured to said socket, the walls of the handle being spaced from the lamp shank and a plurality of V apertures through the handle.

2. A portable-lamp comprising a reflector of thin, light metal and anelongated handle also of thin, light metal projecting radially therefrom, with its'ends extending beyond the margin of the reflector, a lamp socket in the handle and a lamp provided witha shank, the latter extending into the handle and secured to said socket, the walls of the handle being spaced from the lamp shank and a plurality of apertures through the handle. 7

3. A portable lamp comprising a reflector. of thin, light metal, an elongated tubular' handle of similar metal projecting radially therefrom with its ends projecting beyond the margin of the reflector, a lamp socket in the handle end,a lamp in the reflector having its shank projecting through the handle to engage said socket, the walls of the hau-. dle being apertured throughout its length and of an interior diameter to form a substantial air space about the lamp shank.

4. A photographers portable lamp comprising a thin, light, metal reflector, a ta gered handle of similar metal projecting racially therefrom to adistance beyond the rim of the reflector, a lamp socket in the end of the handle, a lamp in the reflector having its shank project through the handle to and secured in the socket, an air chamber in the handle, surrounding the shank, increasing in size towards the reflector, and a plurality of aperturesin the handle wall throughout its length.

5. A portable lamp comprising a reflector of thin, light metal and an elongated handle also of thin, light metal projecting radially therefrom, a lamp socket in the handle, a lamp provided with a shank, the latter extending into the handle and secured to said socket, the walls of the handle being spaced from the lamp shank and a plurality of apertures through the handle, a band on the outside of the handle and a metal bar pivotally or hingedly secured to the band,

the handle and the bar being of suitable length to cooperate with the rim of the reflector to form three points of contact with a suitable rigid support.

6. A portable lamp for photographers use comprising a parabola-shaped reflector of thin, light metal, an air cooled hollow handle of similar metal projecting radially therefrom, a lamp, means within the handle for supporting the lamp,means upon the outside of the handle for removable and adjustable attachment with a rigid support.

7. A portable lamp for photographers Y sition.

use comprising a parabola-shaped reflector.

of thin light metal, an air cooled hollow handleiof similar metal projecting radially therefrom, a lamp, means within the handle for supporting the lamp with its bulb in the reflecto-r, means upon the outside of the handle for removable attachment with a rigid support, said means including a circumferential band, a supportlng stud and operative connections between said stud and ential band, an outwardly projectingpin thereon, a frame having journal bearings for said pin, a supporting stud secured to said frame, and means for locking the proectlng pin to the frame in any desired po- In testimony that I claim the as my invention I affix my signature in the presence of two witnesses, this 18th day of March, 1921.

l/Vitnesses:

TAYLOR E. BROWN, B. L. MACGREGOR.

foregoing WILLIAM T. BARNUM; j 

